On Oscillation of a Food-limited Population Model with Time Delay
نویسندگان
چکیده
is known as Hutchinson’s equation, if r and K are positive constants and h(t) = t− τ for a positive constant τ. Hutchinson’s equation has been investigated by several authors (see, e.g., [13, 14, 18, 23]). Delay logistic equation (1.1) was studied by Gopalsamy and Zhang [7, 25] who gave sufficient conditions for the oscillation and the nonoscillation of (1.1). Publications [1, 2, 3, 4, 5, 6, 10, 12, 15, 16, 17, 19, 22, 24] are devoted to various generalizations of logistic equation (1.1). In 1963, Smith [20] proposed an alternative to the logistic equation for a food-limited population
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